Who among the following said that Political theory contains factors of three kinds-the factual, the…

George H. Sabine, in A History of Political Theory (1937), said that political theory contains three kinds of elements: the factual (what is the case), the causal (why it is so) and the valuational (what ought to be). He held that great political theories always combine these. Leo Strauss stressed political philosophy as a search for the good, not this threefold division.